. Science-gossip . Fig. 8.—Corilla Fig. 9.—Corilla rivolii, immature. where the plates are found. Fig. 9/shows anotherimmature specimen, the dagger here also indicatingthe position of the plates ; but while in the formerspecimen they are placed at the end of the fourthwhorl, they are here found at a place where onlythree and-a-half whorls have been H. H. Godwin Austen, in a letter,confirms my surmise as to the temporary characterof these plates, stating that those found in the oldshells differ very much from what those found in the young might be supposed to develo
. Science-gossip . Fig. 8.—Corilla Fig. 9.—Corilla rivolii, immature. where the plates are found. Fig. 9/shows anotherimmature specimen, the dagger here also indicatingthe position of the plates ; but while in the formerspecimen they are placed at the end of the fourthwhorl, they are here found at a place where onlythree and-a-half whorls have been H. H. Godwin Austen, in a letter,confirms my surmise as to the temporary characterof these plates, stating that those found in the oldshells differ very much from what those found in the young might be supposed to develop into. Hethinks that the early folds are absorbed to makeway for subsequent .ones. As will be seen from theconsideration of Corilla odontophora further on,however, this is not always the case, since in onemature specimen I have found the immaturepalatal folds still existing. Corilla odontophora does not seem to be wellunderstood, and the figure given in TryonsManual of Conchology (2), iii., t. 33, f. 34,copied from Hanley and Theobalds C
Size: 2246px × 1113px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectscience
